The 10 Worst Roads For Traffic In The US

California's I-405 has some of the worst congestion in the country.Flickr/Mike SpasoffTraffic in the United States is getting worse in 2013, and that's a sign of an improving economy, according to INRIX, which released its latest Traffic Scorecard Wednesday.

INRIX CEO Bryan Mistele told Business Insider the correlation between rising congestion and stronger employment numbers is easy to understand: More people working, and more businesses ordering and making deliveries, means more cars on the road.